Soldering iron



Patented Dec. 9, 1924.

UNITED STATES PATENT OFFICE WILLIAM J'. FRISBIE, OF CHICAGO, ILLINOIS, ASSIGNOR TO J USTRITE MANUFACTUR- ING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

soLnERING mon.

Application led May 5, 1924.

T0 all wlw/nz't may concern.'

Be it known 'that I, I/VILLLUI J. Finslnn, a citizen. of' the United States. and aresident of Chicago, in the. county of Cook and State olf Illinois, have invented certain new and useful Improvements in Soldering Irons, of which t-he following is a. specification.

My invention. relates to soldering irons of the type in which, the combustion fuel is alcolici, or some. hydrocarbon oil such as gasoline. The invention concerns particularly such structures in which a combustion section in the form of a Bunsen burner extends coaxially with reference to a handle section which is lli-rovided with a. fuel reservoir, with a gas generating structure and a priming cup interposed between the burner and handle part, the structure being adapted to be set up on end during the priming operation or when not in use. A solde-ring iron ofthis type is disclosed in my application, Serial No. 693,028, filed February 15, 1924. As the metallic handle part forming the reservoir becomes hot through conduction of` heat, the constructions heretofore patented provided a wooden. grip or sleeve fitting overthe handle part and provided with a wooden removable cap which forms also a supporting base for the iron, the cap being removable in order thatthe filling plug at the lower end of the reservoir might be accessible. This grip construction has many disadvantages. In the first place, the grip which intimately surrounds the reservoir section soon becomes uncomfortably hot. In the second place, when the iron is inverted and the reservoir filled there is usually an overfiow of combustion Huid which will fiow down along the outside of the grip or work its way in between the grip and the reservoir wall. In the third place when the iron is set up on end after filling and the prin'iing cup is filled for starting purposes son-ie of the oil usually escapes: from the cup and flows down along the outside of the grip or finds its way in between the upper end of the grip and the reservoir walls. The result is that when the priming fluid is ignited the flame immediately jumps down to the overflow oil on the outside of the grip and between the grip and reservoir and the user becomes frightened and the grip becomes hot. The object of my invention is therefore to provide such construction and arrangement as will avoid the above. disad- Seral No. 710,990.

vantages. I provide a. grip in the form oit a cylindrical shell of fibre or other suitable material of greater diameter than the metallic reservoir section, and for this shell I pro vide a. metallic base by means of which the shell may be supported from the end of the reservoir section to be concentric with the reservoir but spaced away therefrom by an insulating air space, the. conical priming cup serving tol guide and to hold the upper end of the shell in proper spaced relationship. In the base I provide holes for the escape of any accumulated liquid and in the sides of the shell I provide air circulating holes so that heat conducted through the reservoir walls may be rapidly carried away and the grip kept cool. `With this arrangementthe entire grip can be removed while the iron is being filled and then the reservoir section can be wiped dry of any surplus or spilled oil before the grip is again applied. I also provide arrangement for preventing overflow oil from flowing from the priming cup into the inside of the grip, and any oil which may flow from the priming cup to the outside of the grip will be rapidly evaporated or burned away before t-he grip can be heated to any extent.

0n the accompanying dra-Wing I show an iron of my improved construction.

On the drawing,

Fig. 1 is a side elevational view partly in vertical dianietral section,

Fig. 2 is a bottom view of the grip shell base, and l Fig. 3 is a sectional view on'plane JJ-3, Fig. 1.

The tubular body part 10 provides the reservoir 11 for the combustion fuel. In the lower end of the tubular body is the bushing 12 for receiving the filler plug 13 which threads therein. Secured in the upper end of the tubular body is the bushing 14 which supports the generator and valve fitting 15, the frusfo-conical priming cup 16 heilig clamped between the bushing and the fitting to surround the gas generating space 17 within the fitting. At its upper end the fitting seats the gas outlet 18 and supported on the fitting concentric with the tip is the burner tube 19 which at its upper end supports a solde-ring tip 20, the burner tube having the air inlets 21 suitably spaced. Just above the priming cup the fitting has the lateral extension 22 through which lUu lll

to receive the generated gas, a grip structure comprising a base and a tubular shell extending therefrom, and means for detachably securing said base to the lower end of said body part whereby said grip structure may be removed when said reservoir is {ille-d, said grip structure when in place being separated from said body part by a heat insulating air space.

5. In a soldering iron of the class described, the combination of a tubular body part providing a reservoir for liquid fuel, a generator fitting on said body part co-axial therewith, a burner mounted on said fitting f to receive the generated gas, a priming cup concentric with said body part and surrounding said generator fitting, a tubular grip surrounding said body part and separated therefrom by a heat insulating air space, and means detachably securing said grip to the lower end of said body part, said priming cup receiving the upper end of said grip to assist in holding it in spaced position relative to said body part.

(5. In a soldering iron of the class described, the combination of a tubular body part providing a reservoir for liquid fuel,

a generator fit-ting mounted on the upper 'end of said body part co-aXial therewith, a burner mounted on said generator fitting to receive the generated gas, a priming cup surrounding said fitting concentric with said body part, a closure plug for said reservoir at the lower end of said body part, a detachable tubular grip secured at its lower end to said plug and spaced throughout its length from said body part for the circulation of air, said priming cup receiving the upper end of said grip to assist in holding it in spaced relationship with said body part.

7. In a soldering iron of the class described, the combination of a tubular body part providing a fuel reservoir, a generator fitting mounted on top of said body part co-axial therewith, a burner structure mounted on said fitting to receive the generated gas, a priming cup surrounding said fitting concentric with said body part, a grip structure comprising a base and a tubular grip section concentric with but separated from said body part by a heat insulating air space. means for detachably securing said base to said plug, said priming cup being of a diameter to receive the upper end of said grip section` said base serving to support said iron in vertical position.

8. In a soldering iron of the class described, the combination of a tubular body part forming a reservoir for liquid fuel, a generator fitting mounted on the upper end of said body part, a burner mounted on said fitting, a priming cup surrounding said fitting concentric with said body part, a grip in the form of a cylindrical shell surrounding said body part but separated therefrom by a heat insulating air space, means detachably securing said grip at its lower end to said body part, said priming cup being of a diameter to receive and support said grip at its upper end, the upper edge of said cup being deflected to overhang the upper end of said grip whereby to prevent the iiow of priming fluid between the cup and grip.

9. In a soldering .iron of the class described, the combination of a tubular body part forming a reservoir for liquid fuel, a generator' fitting mounted on the upper end of said body part concentric therewith, a burner mounted on said fitting, a priming cup surrounding said generator' iitting concentric with said body part, a grip in the form of a cylindrical shell surrounding said body part but separated therefrom by a heat insulating air space, means detachably securing said grip at its lower end to the body part, the upper edge of said cup being deiiected laterally and downwardly to form an annular space for receiving the upper end of said grip whereby to support said grip relative to said body part and to prevent overflow priming oil from entering between the cup and the grip.

l0. In a soldering iron of the' class described, the combination of a tubular body part forming a reservoir for liquid fuel, a closure plug for said reservoir engaging in the lower end of said body part, a gas generating fitting mounted on the upper end of said body part, a burner mounted on said fitting to receive the generated gas, a priming cup surrounding said fitting concentric with said body part, a grip structure comprising a base and a tubular grip section surrounding said body part but separated therefrom by a heat insulating air space, means for detachably securing said base to said plug. the upper edges of said cup being deflected laterally and downwardly to form an annular space for receiving the upper end of said grip section whereby to assist in supporting the grip structure and to prevent entrance of overflow priming fluid between said cup and grip section.

In witness whereof, I hereunto subscribe my. naine this 29th day of April, A. D., 1924 VILLIAM J. FRISBIE. 

